SKU: F01007100-000-000

Ratchet Set for Delta R4 Helmets

Name: Ratchet Set for Delta R4 Helmets
Brand: 509
SKU: F01007100-000-000
Price: 9.95 USD
Availability: InStock

$9.95 USD

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3 Year Warranty

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Specs

Includes L/R sides, both Inner and Outer components of ratchet
WARNING for California Residents

You're going to LOVE the fit. Try it on and experience our perfect fit. If you don't love it, send it back in new and unused condition within 30 days for an exchange or full refund*. Risk free.

Not sure about your size? Try on at your local dealer!

*Street Helmets are a tighter fit due to cheekpad compression, however, they do pack out over time/use.

How to Measure

When measuring your head, use a cloth tape. Start it just above your eyebrows and circle it around the thickest point in the rear of your head and then reference the size guide below.

Scroll to the right to see more sizes

Size	US Hat Size	Inches	Centimeters
X-Small	6 5/8 - 6 3/4	20 7/8 - 21 1/8	53 - 54
Small	6 7/8 - 7	21 5/8 - 21 7/8	55 - 56
Medium	7 1/8 - 7 1/4	22 1/2 - 22 5/8	57 - 58
Large	7 3/8 - 7 1/2	23 1/4 - 23 1/2	59 - 60
X-Large	7 5/8 - 7 3/4	24 - 24 1/4	61 - 62
2X-Large	8	24 3/4 - 25	63 - 64
3X-Large	8 3/4	25 1/4 - 25 3/4	64 - 65
4X-Large	9	26 - 26 1/4	66 - 67
Youth Small	6	18 1/8 - 18 7/8	47 - 48
Youth Medium	6 1/8 - 6 1/4	19 1/4 - 19 5/8	49 - 50
Youth Large	6 3/8 - 6 1/2	20 - 20 1/2	51 - 52

Pressure Points

When trying on a helmet, take note of any pressure points on your forehead—a sign that the helmet is too round. Pressure points on the sides of your head indicate a helmet is too oval for the shape of your head. After you buy a new helmet, try wearing it for 30 to 45 minutes to check for pressure points before using it on a ride.

Pressure Points

When trying on a helmet, take note of any pressure points on your forehead—a sign that the helmet is too round. Pressure points on the sides of your head indicate a helmet is too oval for the shape of your head. After you buy a new helmet, try wearing it for 30 to 45 minutes to check for pressure points before using it on a ride.

Overall rating: 1.0 / 5 from 1 reviews.

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Reviews

Delta R4 Helmet

"Unfortunately, this rating is more regarding getting a warranty part than the helmet. Purchased an R4 in mid February and on our first ride a few days later the screw on the shield fell out. Was going to take the helmet back to dealer since it was less than a week old but thought I’d call 509. We received the ratchet part a week later but as of today (almost 2 months later) are still waiting on the screw. We were told they had some coming in but needed the current supply for production helmets…..not warranty situations. Supposedly the screw was mailed recently after I followed up a third time. We will see if it arrives."

— Dean B. (1/5)

Q&A

Does this work for Delta R3L?: Hello! Unfortunately no, the Ratchet Set for Delta R4 Helmets is only compatible with the Delta R4.

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